1)Acronym for Join Us in Creating Excitement, Excellence, Energy - any E word that's juicy.
2)Commercial street pedlar 'slang' that is used in many variations.
3) Related to anything that will make a lot of money
"Oh man this spot is so juicy, look at all the people"
"Juice to you on that sale, man"
"I'm feelin' juiced up after that 4 pack of Redbull - I'll be able to talk so fast"